Stove



W. FORBES. sTovE.

Patented July 7, 1891.

oullt A TTRNEYS l/lI VE N TOI? wadeQT/gA new?! ra" WILLIAM FORBES, or PLAINwELL, MICHIGAN.

STOVE.

SPECIFICATION forming part of Letters Patent No. 455,613, dated July 7, 1'891. Application ledrOctober 24, 1890. Serial No. 369,237. (No model.)

T all whom, t may concern/.a Y

Be it known that I, WILLIAM FORBES, of Plainwell, in t-he county of Allegan and State of Michigan, have invented Ya new and useful Stove, of which the following is a full, clear, and exact description.

This invention relates to au improvement in heating-stoves which use either coal, coke,

o: wood as a fuel, and has for its objects toY provide a simple and convenient stove which will afford a large area of heating-surface that has direct contact with the incandescent mass of fuel and the air surrounding they stove, whereby the air will be quickly and uniformly heated.

A further object is to furnish a heatingstove the grate of which forms theYre-pot, which is adapted to :receive a rocking movement or be completely rotated within the stove.

A further object is to provide a heatingstove with a revoluble lire-pot which is comprised of hollow bars or tubes that have communication with air outside of the stove, and also to adapt said fire-pot to be readily removed from the walls of the stove for repairs.

To these ends my invention consists in certain features of construction and combination of parts, as hereinafter described, and pointed out in the claims.

Reference is to be made to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure -l is a side elevation in section of the stove, taken on the line l l in Fig., 2, viewed in the direction of the arrows in said figure. Fig. 2 is a front elevation in section, taken on the line 2 2 in Fig. l, other parts being also shown which are represented in Fig. 3. Fig. 3 is a perspective View of the device, showing its front side and one end. Fig. 4 is an enlarged detached view of au essential detail broken, and Fig. 5 is a broken sectional view of one Vend of the stove-cylinder adapted to burn wood as a fuel.

The casingof the stoveis composed of metal plates or walls, there being two parallel side walls A, that are perpendicular, which wallplates are surmounted by a hot-air chamber B, of smaller dimensions than the compartment below it wherein the cylinder is located, i

said hot-air chamber having a laterally-extended base-plate a, that is furnished with a depending edge and rests upon the side plates A, to which the base-plate'is joined in any suitable manner.

A series of tlues a are introduced within the chamber B, and are connect-ed at their ends with the front and rear vertical walls of said chamber, which they perforate, thus affording conduits for the transmission of heat, which their walls receive from the lire below, and on top of the chamber B is a thimble ZJ', that opens into the chamber and affordsa connection for a draft-pipe. (Not shown.)

The front edges of the side plates A are in-v clined outwardly to a point c', where a crossbar c joins the two side plates at the front of the stove, the front plate CZ being held in place transversely below the cross-bar c, joins the side plates neartheir edges, and is inclined outwardly in a plane parallel to vsaid edges, as shown in Fig. l. At a proper distance from the lower edge of the plate d said front plate is bent to throw it into a vertical plane, V

and above the vertical portion d of thefront plate a transverse sliding gate or damper c is secured upon the lower portion of the inclined walls of the front plate, that is slotted at this point for the introduction of air, which the damper will control. Above the cross-baro a door g'is jointed to 'the side plates A at its lower edge and incliues inwardly'to allow its upper edge to lit closely against a portion d2 of vthe front plate, which is located above the door and joins thesides A, and base-plate a of the hot-air chamber B, a handle g', that is secured to the front face of the door, affording means to manipulate it, which door, when lowered, as shown by dotted lines (broken) in Fig. 1,-will admit the entrance of material through the opening thus alorded.

The rear plate 7L ot' the stove is formed below the point :n similar to the shape ot' the front plate CZ below the cross-bar c, being inclined inwardly to a point opposite the lower edgeof the damper c, and thence vertically downward to be joined by a bottom plate t', that is also secured to the lower edge of the portion-CZ on the front plate, the side plates IOO -A having feet 72 formed or secured to their i lower edges. Above the pointthe rear plate or wall of the stove is extended vertically to engage the lower surface of the base-plate d near its margin, therebj7 completing a walled compartment wherein the cylindrical fire-pot C is placed, which will be described.

Each side wall A has a circular aperture of the same diameter formed in it oppositely. Said apertures have their centers nearly in the same horizontal plane with the cross-bar c, and are of proper dimensions to receive the cylinder-heads 7c, that loosely iit within the marginal Vedge of the apertures. Upon the cylinder-heads 7c the centrally-located tubular hubs 7c are formed or affixed, which project laterally on each side of the heads and have their bores of the same diameter. At equal-radial distances from the centers of the cylinder-heads 7a equally-spaced perforations Vare formed in the heads at a point near the periphery of each head, which perforations ai'e designed to receive a series of hollow grate-bars m, that are of equal length and cylindrical form, the end portions of said tubular grate-bars fitting closely into the perforations of the heads 7c when inserted therein. Upon the outer faces of the cylinder-heads 7c the segmental clampingplates n are re tained in place by a series of spacing-bolts o, the reduced ends of which bolts pass through aligning perforations in theheads and plates formed at proper intervals therein, the bolts being adapted to hold the plates and heads in pairs together and the cylinder-heads properly` spaced apart, as shown in Fig. 2, the plates being perforated at points opposite the hollow bars m, the diameter of said holes being equal to the caliber of the bars. Each set of segmental clamping-plates at together form an annular disk of such a relative diameter to the cylinder-head itis secured upon that an overlapping ange n is afforded on the outer edge of each clamping-plate, which flanges engage loosely the outer surfaces of the side plates A of the stove, and thus prevent a 'longitudinal displacement of the cylindrical fire-pot C,revoluble movement of the same peing permitted.

As the stove is intended for the use of coal or wood as a fuel, when the vfirst-named material is to be utilized as a source of heat by its combustion there is an elongated center tube p inserted in the hollow hubs 7c', which tube or pipe when in place corresponds in length with the distance between the outer ends of the projecting hubs and in diameter closely fits the bores of the hubs. The ends of the center tube p and the outer ends of the hollow hubs 7c are transversely channeled for the reception of the end portions of the handle -bars D, which when seated in the channels mentioned are embraced on opposite edges by the shoulders of the channels, the lugs r on the handle-bars having a close contact with the outer surface of the cylindrical hubs 7c to coactwith the channel-shoulders and form an interlocking engagement between the end portions of the handle-bars and the other parts named.

As shown in Fig. 2, the handle-bars D,hubs 7c', and center tube 1i are secured together by a long bolt p', which latter passes through aligning perforations made laterally in the\ handle-bars at points which will correspon( with the center of the tube p, the bolt being held by a nut at each end, whereby the handle-bars are attached to the cylindrical firepOt O and adapted to rock the latter when the bars are vibrated. v

The frictional contact of the cylinder-heads k with the side plates A would be objectionable if the entire weight of the fire-pot C and its content-s was allowed to rest on the side plates. To obviate this and reduce friction, so that the fire-pot may be readily agitated by a vibration of the handle-bars D, two similar bracket-frames E are provided, which frames each consist of a pair of parallel bars centrally joined by a transverse web s, the latter having their upper edges cut away in circular form to receive the exterior surfaces of each of the outwardly-projecting portions of the hubs 7a', the ends of the bars being secured to the base-plate a of the heatingchamber above and the sides of the stove below the webs s, spacing-blocks if being inserted between the ends of the bars and the sidesA to hold the lower ends of the bracket-frames at a proper distance from said sides, as shown in Fig. 2.

The hollow grateebarsmdo not form a coniplete chamber or fire-pot, there being an opening afforded by omitting two bars, as shown in Fig. l, thus providing an inlet for the introduction of coal or other fuel, and in order to close this opening when the fire-pot is replenished with fuel a rocking grate-frame F is introduced within the fire-pot. The gratefraine F is composed of two end plates fia/that are held spaced apart and parallel by the ICO lIO

grate-bars u ,the length of the frame being proportioned to allow it to enter freely between the cylinder-'heads 7c and rest upon the inner projecting portions of the hollow hubs 7c', the end plates u having their lower edges deeply scalloped to allow them to engage the hub ends peripherally and retain the grateframe thereon free tol rock laterally. The fire-pot C should for convenience normally rest on its supports with the grate-frame F opposite the door g, and the adjustment of the handle-bars D should be such relatively that they will lie in a vertical plane when the grate-frame is in the position mentioned.

Such a proportionate length is given tothe end plates u at their shortest points that the grate-frame bars u and said end plates will travel closely to the inner surface of the hollow grate-bars m and bolts m', that are located near the grate-bars which form the side bonndaries of the fuel-stoking aperture, and to limit the rocking movement of the grateframe F in either direction the studs@ are inserted in the cyliiider-heads k on their in- IIS ner faces at such points as will allow the grate-frame to be moved to completely open or close the aperture in the fire-pot, the latter-named position of the grate-frame being indicated by dotted lines in Fig. l.

Below the cylindrical lire-pot C the rectangular chamber lzu,.which is formedV by the junction of the side walls A with the front and rear Walls, as before explained, is utilized as an ash-pit, and .throughaproper-sized opening formed in one side wall the ash-re ceiving drawer G is introduced. Said drawer, having its inner end open and the side walls cut rounding on the upper corners at this end, is adapted to scoop up any droppings thatfall into the ash-pit. Y

A cross-bar w is secured on the upper edges of the side walls of the ashdrawer G i to stiifen them, and a handle Q02 is, attached to the front wall of the drawer to permitit to be handled.

'd the long bolt used with the tube p, this modiiied form of constructionbeing shown plied to one hollow hub in Fig. 5. A i -In operation the hollow grate-bars m fori a series of openpassages through the stove, through which air in the room circulates, and

as the exterior surface of the bars has directand its manner 'of support enable an operator to change the position of the contents of the fire-pot, so as to bring clinkers that are in the bottom of the fire to the upper surfacey for easy removal through the door g and also to agitate the mass of coal and thereby removev ashes from the entire fire-bed in Van expeditious manner.

enabled to carry afresh increment of coal below the major portion of fuel in the iire` as ap- Itis also of advantage to be Patent, is-' 1. In a stove, the combination, with stoveplates forming a compartment and a door therein, of a revolubly-supported lire-pot within that has tubular open-end grate-bars which extend toward and through opposite walls of the stove-compartment, and a device whereby the fire-pot maybe revolved,substantiallyas ,set forth. l

2.- In al1eating-stove,the combination, with a walled compartment composed of plates, a door therein at the front, and an air-damper below the door, of a revolubly supported transversely-located cylindrical fire-pot having tubular grate-bars that extend through the sides of the walledcompartment, and a device by which the cylindrical fire-potmay be rotated, substantially as set forth.`

In a heating-stove, the combination, With a compartment composed of plates, a door thereon, an air-damper belowr the door, a hotair chamber above on the compartment, an ash-pit below therein, and a removable ashdrawer, of arevolubly-supported transverselylocated cylindrical fire pot havingV hollow grate-bars which are open at theends and extending through `the sides of the stove-coinpartmen t, and handle-bars that are connected to the lire-pot, substantially as set forth.

4E. In a heating-stove, a revoluble fire-pot comprised of cylinder-heads that have hollow hubs that lare seated on bracket-frames attached to the sides of the stoves, cylindrically-arranged spaced 4tubular grate-bars that extend between the cylinder-heads, and' a grate-frame which is adapted torock on the hollow hubs within the fire-pot and close or open a fnel-stoking hole formed betweenthe grate-bars, substantially as set forth. y

\ WILLIAM FORBES.

A Vitnesses:

JOHN G. EMERY, J. R. CRUNDULL.

roo 

